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Scientific American, Vol. 87, No. 15 (1902) (1902)
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works use for many years as a fuel. It is true that the heat- MOIStULEC: | ficecaio darevecé vers exotetacs seatereS sven os re 4.82 ing efficiency thus obtained has been small, since the profitable, as the period during which they may be crude peat itself contains but from 30 to 50 per cent… … be understood that the question as to the physical and © 1902 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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